Sulphuryl choride `(SO_(2)CI_(2))` is also used as a chlorinating agent. Write the mechanism for the chlorinating of alkane using organic peroxide)
`Ph-overset(O)overset(||)(C)-O-O-overset(O)overset(||)(C)-Ph` (benzoyl peroxide) as an initiator.

Explanation

Mechanism
a. Chain-intiation step:
i.
ii.
b. Chain-propagation step:

c. Chain termination step:
`dot(Cl)+dot(Cl) to Cl_(2), dot(H)+dot(Cl)to HCl`
`dot(H)+dot(H)toH_(2),dot(R)+dot(R)toR-R`
`dot(R)+dot(Cl)to R-Cl`
Activation energy of the chain-termination step is zero because no bonds are broken, bonds are only formed.